For Magnum applications, use Conversion Kit 271-36655-16 and Pushrods 271-36621-16 to convert stock pedestal rocker arms to these adjustable stud mount arms. Stock valve covers must be modified or spaced upward approximately 3/8" to avoid interference.

Crane Cams billet extruded aluminum rocker arms have been racings most popular aluminum rockers since 1964. Their roller tip is more efficient than standard scrub-type rockers, they have a lower mass (less weight on the valve), and come in ratios that will increase the net valve lift and duration of a camshaft.